2G E316G Fuel Pump

[miden]

So I'm looking at upgrading from the stock 2g fuel pump. Back in the day, your choices were Walbro and, well, that was pretty much it.

Three are so many more options now. What's the current best for an E316G? I'm not looking for huge amounts of power and I have an afpr.

EDIT: I've done my searching, but I don't see a lot of new threads. Almost all of them are ~20 years old...

TIA for any advice.

 

[Spleen8urLSX]

Depends, Walbro 190lph if you don’t plan on upgrading the fuel pressure regulator (I know you mention you upgraded the regulator, but for reference for those who search and come across this thread later), other than that options are endless. If you upgrade the regulator to an adjustable then my advice is a Walbro 450lph or 525, yes way overkill for a 16g but at only a few dollars more why not have plenty of fuel pump in case you want more later on?

Reason I mention an adjustable pressure regulator is a 255lph or bigger CAN (not always but certainly can) over run a stock regulator, plus an older stock regulator is more prone to this. In todays age you’re better off upgrading the pump and regulator in one shot and you have it covered.

Keep in mind, one in tank pump isn’t going to result in the car performing better than the other, it either works and flows enough fuel for what you’re doing or it doesn’t. Walbro is still the go to for in tank pumps. The 340lph pumps out there are absolute garbage. I had an Aeromotive Stealth 340 for a season, was plenty enough to make 420 at the wheels on an Evo 3 16g on e85, however next season we found the fuel pressure to be dropping on the dyno, the 340 pump was the culprit, pulled it out and tossed it in a trash can and replaced it with a Walbro 450. Upon further investigation found this to be common on that pump, and even though it’s advertised by Aeromotive to be an “e85 pump” on the box, in the fine print they say NOT to use e85 and will not warranty it if you do. Since that happened we started to come across many other 340 failures. Its also the same exact China pump that AEM and on3 and many other companies slap their name on and sell as their 340lph fuel pump, and they belong nowhere but in a trash can.

Keep in mind your injectors aren’t going to flow more than the ecu is telling them and the fuel pressure isn’t going to exceed what the regulator allows (given everything is working correctly) therefore going with a pump that is capable of flowing more than what you need won’t hurt a thing. Walbro is still the go to for reliability for in tank pumps and wether it’s a 190lph or 525lph or anything in between, if it flows enough then it flows enough and the car will perform the same no matter what pump is in there as long as it’s flowing enough. One of the vendors here if you go to the vendor section recently posted about a Walbro 350lph that fits our application they have in stock, might be right up your alley, however on pump gas a 255lph or 190lph would likely suffice. In your case since you mention you do have an adjustable regulator, for the slight price difference I’d pick up a Walbro 450lph or 525 in case you need more later it’s already done.

 

[miden]

Keep in mind, one in tank pump isn’t going to result in the car performing better than the other, it either works and flows enough fuel for what you’re doing or it doesn’t. Walbro is still the go to for in tank pumps. The 340lph pumps out there are absolute garbage. I had an Aeromotive Stealth 340 for a season, was plenty enough to make 420 at the wheels on an Evo 3 16g on e85, however next season we found the fuel pressure to be dropping on the dyno, the 340 pump was the culprit, pulled it out and tossed it in a trash can and replaced it with a Walbro 450. Upon further investigation found this to be common on that pump, and even though it’s advertised by Aeromotive to be an “e85 pump” on the box, in the fine print they say NOT to use e85 and will not warranty it if you do. Since that happened we started to come across many other 340 failures. Its also the same exact China pump that AEM and on3 and many other companies slap their name on and sell as their 340lph fuel pump, and they belong nowhere but in a trash can.

Thanks. This is exactly the sort of information I was looking for. I have an adjustable FPR and 'link to control the injectors. Currently on the stock 450s, but I have some 1050 FICs I'll be putting in.

We have E85 out here, but most likely I'm going to stick to pump, if only because the E85 station is all the way across town.

Honestly, I don't seem myself outrunning a Walbro 255, but I know they're loud and wanted to check if there are quieter/more reliable options out there.

I'd like to do it once and do it right.

Thanks again.

 

[AWD-Tony]

255 is loud but it’s fine for e16g. 525 is quiet and in the instructions, they recommend using -6 line. 255 & 1000cc injectors is all you need for that turbo for pump or e85.

 

[Spleen8urLSX]

255 is loud but it’s fine for e16g. 525 is quiet and in the instructions, they recommend using -6 line. 255 & 1000cc injectors is all you need for that turbo for pump or e85.

I probably should’ve mentioned they do indeed recommend using -6 line with the 525, and I have read of this causing issues for some, however, here in Shootout country we have 3 cars running the 525 with stock lines and no one has yet to see issues. One of them belongs to a good buddy of mine (don’t know if he still gets on here) making around 600 on an hx40 on one of the lowest reading dynos in the land, and 2 seasons, multiple passes, and several street miles later the stock lines haven’t posed an issue yet. However to be fair, this is why I opted for a 450 on my personal car opposed to the 525 as it does eliminate that risk. You do a 450 now you’ll have plenty for later if you need it and won’t have to tear back into it for awhile while avoiding issues the stock lines may cause. Like mentioned above, a 255 and the 1050s you have would be more than plenty for the 16g, hell on pump gas some 680cc injectors and a 190 are plenty enough, however like you mentioned for doing it once (hopefully) and not having to mess with it again the 450 would be a good bet being (last I looked) I believe only 30ish bucks more than the 255 (haven’t looked in many moons, quite possibly has changed). Hell next season I’ll have a Walbro 450 and Bosch 2200cc injectors in my car with a 14b, WAY over kill for a 14b but won’t hurt a thing either, then if I decide I want to go back with something in the 60mm+ compressor range like I had before, I already have plenty of fuel on the table and don’t be dropping the tank again or buying another set of injectors.

EDIT: And to add to that, yes the 255 would be enough for a 16g even on e85, but it’s not unheard of for a 255 to be not quite enough if you move all the air the 16g is able and willing to move while using e85, but every car and set up also varies.

 

[AWD-Tony]

I probably should’ve mentioned they do indeed recommend using -6 line with the 525, and I have read of this causing issues for some, however, here in Shootout country we have 3 cars running the 525 with stock lines and no one has yet to see issues. One of them belongs to a good buddy of mine (don’t know if he still gets on here) making around 600 on an hx40 on one of the lowest reading dynos in the land, and 2 seasons, multiple passes, and several street miles later the stock lines haven’t posed an issue yet. However to be fair, this is why I opted for a 450 on my personal car opposed to the 525 as it does eliminate that risk. You do a 450 now you’ll have plenty for later if you need it and won’t have to tear back into it for awhile while avoiding issues the stock lines may cause. Like mentioned above, a 255 and the 1050s you have would be more than plenty for the 16g, hell on pump gas some 680cc injectors and a 190 are plenty enough, however like you mentioned for doing it once (hopefully) and not having to mess with it again the 450 would be a good bet being (last I looked) I believe only 30ish bucks more than the 255 (haven’t looked in many moons, quite possibly has changed). Hell next season I’ll have a Walbro 450 and Bosch 2200cc injectors in my car with a 14b, WAY over kill for a 14b but won’t hurt a thing either, then if I decide I want to go back with something in the 60mm+ compressor range like I had before, I already have plenty of fuel on the table and don’t be dropping the tank again or buying another set of injectors.

I’m running 525 w stock line to fuel filter also. Seems fine but will eventually switch to -6 feed. Just wanted to make sure it was understood that that’s what they recommend.

 

[Spleen8urLSX]

I’m running 525 w stock line to fuel filter also. Seems fine but will eventually switch to -6 feed. Just wanted to make sure it was understood that that’s what they recommend.

I could very well be wrong as I’ve never dove deep into it but I have a feeling demand plays into it, but you are absolutely right it should be mentioned.

Might I add, off topic but I’ve seen you post a lot here since I’ve gotten more active in forum land as of recently, I must say I absolutely love your 1g one of my favorites on here, keep up the good work sir!

 

[AWD-Tony]

I could very well be wrong as I’ve never dove deep into it but I have a feeling demand plays into it, but you are absolutely right it should be mentioned.

Might I add, off topic but I’ve seen you post a lot here since I’ve gotten more active in forum land as of recently, I must say I absolutely love your 1g one of my favorites on here, keep up the good work sir!

Thanks man! I’ll simmer down on the posts

 

[DSMPT]

I have been running the AEM 340 on my 2.3/16g 2g, I switched from the Walbro 450. At least I have no issue at all for 8+ years. Obviously it is less noisier than the Walbro 450, I like that since the car is daily.

 

[curt-s]

FYI if you want quiet, stay away from the Walbro 350. It's quite loud, ten feet from the bumper loud, and it's not just mine. Talked with a Subaru owner recently who also has one, same deal. They're just loud.

 

[Spleen8urLSX]

I have been running the AEM 340 on my 2.3/16g 2g, I switched from the Walbro 450. At least I have no issue at all for 8+ years. Obviously it is less noisier than the Walbro 450, I like that since the car is daily.

If you’re on pump gas I’m not shocked, otherwise I’m impressed if that’s e85 as I’ve now chucked 4 of them in a trash can

 

[We're on Boost]

FYI if you want quiet, stay away from the Walbro 350.

The Walbro 350 (GSS350G3, GSS351G3, GSS352G3) is a gerotor pump like the Walbro 255. Is the 350 louder than the 255?

 

[DSMPT]

If you’re on pump gas I’m not shocked, otherwise I’m impressed if that’s e85 as I’ve now chucked 4 of them in a trash can

91 pump on my 2g. I was recommending my customers Walbro pumps before as it's common but I changed the recommendation to avoid warranty issue. Their service was really complicated and not recommended. Anyways they would charge a $40 fee for the inspection even it's defective or not. I am not sure now though. Also I have sold several 340s, I haven't heard any issues so far, but there is no e85 in Japan.

 

[miden]

Thanks, everyone, for an informed and civil conversation. I really appreciate it.

To summarize:

• Wally 255 with AFPR would probably meet all of my needs with an E316G, even on E85. But it might be close on E85.
• 340LPH pumps that are "rated" for E85 may or may not last if you actually use E85.
• Wally 450+ will give me more headroom than I'm ever likely to use, but depending on fuel needs and pump size, upgrading the fuel lines may be required.

So it seems there are two "one and done" solutions:

1. Upgrade to a 340 pump and skip E85.
2. Upgrade to a Walbro 450 and upgrade the send/return lines.

And one possibly a third one & done:

• Upgrade to a Walbro 255 and hope I don't want to go bigger than the E316G.

Finally, the Whinebro name is well earned and I should consider a louder fuel pump to be the price of entry for a modified car.

Did I miss anything? Or, worse, mis-state anything? I doubt I'll be the last person to ask this question and I want to be accurate.

 

[DSMPT]

Or Fuelab started to sell 300/340 in-tank fuel pumps some years back. I have never used it myself so can't say anything sure, but I have heard a good thing about running this pump on E85. Just fyi.

 

[miden]

One last question: at what point do you need to upgrade your return line?

The bigger the pump, the bigger return is required, but there must be a practical cutoff where the stock hardline can't keep up.

 

[DSMPT]

One last question: at what point do you need to upgrade your return line?

The bigger the pump, the bigger return is required, but there must be a practical cutoff where the stock hardline can't keep up.

In my case, I still had the stock return line when I had -8AN feed line. I made the return line -8AN when I went -10AN feed line.

 

[miden]

In my case, I still had the stock return line when I had -8AN feed line. I made the return line -8AN when I went -10AN feed line.

Thanks. Sounds like upgrading the return line is way overkill for my needs. Probably the feed line, too.

 

[DSMPT]

Thanks. Sounds like upgrading the return line is way overkill for my needs. Probably the feed line, too.

The first fuel line that you should upgrade is the line from fuel filter outlet to fuel rail inlet. That would be a good idea if you still have the OEM one.

 

[curt-s]

The Walbro 350 (GSS350G3, GSS351G3, GSS352G3) is a gerotor pump like the Walbro 255. Is the 350 louder than the 255?

Having had a 255 for my 1g fwd, I would say without reservation that the 350 is louder both in-car on my 2g awd (not surprising due to pump location) but also outside of car, which is surprising considering location of the 1g fwd pump.

 

[We're on Boost]

Having had a 255 for my 1g fwd, I would say without reservation that the 350 is louder both in-car on my 2g awd (not surprising due to pump location) but also outside of car, which is surprising considering location of the 1g fwd pump.

Ok thanks!